Efficacy of Biocides on Laboratory-Generated Legionella Biofilms

Lett Appl Microbiol. 1993 Oct;17(4):158-61. doi: 10.1111/j.1472-765x.1993.tb00384.x.


Results of biocide efficacy testing on laboratory-generated microbial biofilms containing Legionella bozemanii is presented. These show that chlorine is effective at recommended concentrations in cooling towers; at least 48 h contact between free chlorine and the biofilm is necessary. Of five commercial biocides tested, those containing isothiazolinones and dibromonitrilo-proprionamide were most effective against sessile L. bozemanii.

MeSH terms

  • Disinfectants / pharmacology*
  • Legionella / drug effects*


  • Disinfectants